{"id":"https://openalex.org/W115667232","doi":null,"title":"THE 120 MW X-BAND KLYSTRON DEVELOPMENT AT KEK","display_name":"THE 120 MW X-BAND KLYSTRON DEVELOPMENT AT KEK","publication_year":1998,"publication_date":"1998-01-01","ids":{"openalex":"https://openalex.org/W115667232","mag":"115667232"},"language":"en","primary_location":{"id":"pmh:oai:cds.cern.ch:370088","doi":null,"is_oa":false,"landing_page_url":"http://cds.cern.ch/record/370088","pdf_url":null,"source":{"id":"https://openalex.org/S4306402195","display_name":"CERN Document Server (European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":null},"volume":null,"type":"article","indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"Y.H. Chin","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Y.H. Chin","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108466317","display_name":"K. Takata","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"K. Takata","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5013207166","display_name":"Shigeki Fukuda","orcid":"https://orcid.org/0000-0002-7656-8909","observed_orcids":["https://orcid.org/0000-0002-7656-8909"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Shigeki Fukuda","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-7656-8909","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057916809","display_name":"Hiroshi Mizuno","orcid":"https://orcid.org/0000-0002-4110-4717","observed_orcids":["https://orcid.org/0000-0002-4110-4717"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Hiroshi Mizuno","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-4110-4717","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108122505","display_name":"S. Michizono","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"S. Michizono","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5068575606","display_name":"S. Yamaguchi","orcid":"https://orcid.org/0009-0006-0780-6279","observed_orcids":["https://orcid.org/0009-0006-0780-6279"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"S. Yamaguchi","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5053587486","display_name":"Satoru Matsumoto","orcid":"https://orcid.org/0000-0002-0817-4713","observed_orcids":["https://orcid.org/0000-0002-0817-4713"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Satoru Matsumoto","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-0817-4713","affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5075110883","display_name":"Shuichi Tokumoto","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"S. Tokumoto","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.7344,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.64567452,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11175","display_name":"Gyrotron and Vacuum Electronics Research","score":0.6377000212669373,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11175","display_name":"Gyrotron and Vacuum Electronics Research","score":0.6377000212669373,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11367","display_name":"Particle accelerators and beam dynamics","score":0.3418000042438507,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11920","display_name":"Pulsed Power Technology Applications","score":0.00989999994635582,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/x-band-klystron","display_name":"X-band klystron","score":0.9919999837875366},{"id":"https://openalex.org/keywords/rf-window","display_name":"RF window","score":0.6349999904632568},{"id":"https://openalex.org/keywords/high-power-microwave","display_name":"high-power microwave","score":0.3779999911785126},{"id":"https://openalex.org/keywords/klystron-efficiency","display_name":"klystron efficiency","score":0.6679999828338623}],"concepts":[{"id":"https://openalex.org/C94506165","wikidata":"https://www.wikidata.org/wiki/Q863109","display_name":"Klystron","level":3,"score":0.9888705611228943},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.6077504754066467},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.5505964756011963},{"id":"https://openalex.org/C180048950","wikidata":"https://www.wikidata.org/wiki/Q836828","display_name":"Linear particle accelerator","level":3,"score":0.5134140253067017},{"id":"https://openalex.org/C192144188","wikidata":"https://www.wikidata.org/wiki/Q245739","display_name":"Solenoid","level":2,"score":0.45832765102386475},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.45112577080726624},{"id":"https://openalex.org/C2781183794","wikidata":"https://www.wikidata.org/wiki/Q3772984","display_name":"W band","level":2,"score":0.41953253746032715},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.39841240644454956},{"id":"https://openalex.org/C116915560","wikidata":"https://www.wikidata.org/wiki/Q83504","display_name":"Nuclear engineering","level":1,"score":0.3832753896713257},{"id":"https://openalex.org/C168834538","wikidata":"https://www.wikidata.org/wiki/Q3705329","display_name":"Beam (structure)","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:cds.cern.ch:370088","doi":null,"is_oa":false,"landing_page_url":"http://cds.cern.ch/record/370088","pdf_url":null,"source":{"id":"https://openalex.org/S4306402195","display_name":"CERN Document Server (European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":null},{"id":"mag:115667232","doi":null,"is_oa":false,"landing_page_url":"http://www.cern.ch/accelconf/e98/PAPERS/TUP15G.PDF","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.4943999946117401,"display_name":"Industry, innovation and infrastructure","id":"https://metadata.un.org/sdg/9"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W50707737","https://openalex.org/W1678285739","https://openalex.org/W1934351870","https://openalex.org/W2159125826","https://openalex.org/W4231971223","https://openalex.org/W2158553684","https://openalex.org/W2147017246","https://openalex.org/W2557303215","https://openalex.org/W2169404467","https://openalex.org/W4390486891"],"abstract_inverted_index":{"In":[0],"this":[1,45],"paper,":[2],"we":[3,47,54],"summarize":[4],"our":[5],"activities":[6],"on":[7],"X-band":[8],"klystron":[9,26,66,92,107,245],"development":[10,246],"for":[11,61,68,79],"the":[12,56,80,89,105,111,147,170,194,198,202,218,244],"Japan":[13],"Linear":[14],"Collider":[15],"(JLC)":[16],"project.":[17],"Our":[18],"goal":[19],"is":[20,104,117,142,151,174,221],"to":[21,134,153,176,192,223],"produce":[22,224],"a":[23,31,62,69,136,206,225],"120-MW":[24],"class":[25],"at":[27,197,237],"11.424":[28],"GHz":[29],"with":[30,38,96,124,162,227],"pulse":[32,226],"length":[33],"of":[34,65,72,128,201,205,243],"1.5":[35,137],"\u03bcs":[36,138,229],"and":[37,67,84,88,146,169,232],"an":[39],"efficiency":[40],"better":[41,70],"than":[42],"47%.":[43],"For":[44],"end,":[46],"have":[48,166],"advanced":[49],"three":[50],"programs":[51],"simultaneously.":[52],"First,":[53],"adopted":[55],"particle-in-cell":[57],"(PIC)":[58],"code,":[59],"MAGIC,":[60],"realistic":[63],"simulation":[64],"design":[71],"Traveling-Wave":[73],"(TW)":[74],"output":[75,120,240],"cavity.":[76],"Simulation":[77],"results":[78],"XB72K":[81,102],"No.":[82,85],"8":[83],"9":[86],"klystrons":[87],"SLAC":[90],"XL-4":[91],"show":[93],"excellent":[94],"agreements":[95],"measurements.":[97],"A":[98],"new":[99,159],"solenoid-focused":[100],"klystron,":[101],"No.10,":[103],"first":[106],"designed":[108,168],"by":[109],"using":[110],"MAGIC":[112],"code.":[113],"Its":[114],"predicted":[115],"performance":[116],"126":[118],"MW":[119],"power":[121,149],"(efficiency":[122],"48.5%)":[123],"peak":[125],"surface":[126,195],"field":[127,196],"about":[129,175],"77":[130],"MV/m,":[131],"low":[132],"enough":[133],"sustain":[135],"long":[139],"pulse.":[140],"It":[141],"now":[143],"in":[144],"manufacturing":[145],"high":[148],"testing":[150],"scheduled":[152],"start":[154],"from":[155],"November":[156],"1998.":[157],"Second,":[158],"RF":[160],"windows":[161],"100-MW":[163],"power-handling":[164],"capability":[165],"been":[167],"cold":[171],"model":[172],"test":[173],"start.":[177],"They":[178],"utilize":[179],"TW":[180,208],"mixed":[181],"modes":[182],"(TE11":[183],"plus":[184,189],"TE12":[185],"modes,":[186],"or":[187],"TE11":[188],"TM11":[190],"modes)":[191],"reduce":[193],"brazing":[199],"edge":[200],"ceramic,":[203],"instead":[204],"single":[207],"TE01":[209],"mode":[210,215],"window":[211],"that":[212],"needs":[213],"expensive":[214],"converters.":[216],"Third,":[217],"Blumlein":[219],"modulator":[220],"upgraded":[222],"2":[228],"flat":[230],"top":[231],"200":[233],"ns":[234],"rise":[235],"time":[236],"550":[238],"kV":[239],"voltage.":[241],"Details":[242],"are":[247],"presented.":[248]},"counts_by_year":[],"updated_date":"2026-09-22T06:50:58.402377","created_date":"2016-06-24T00:00:00"}